R e g u latf n g    a p pa rat u s



(No ModeL;

W. G. PRESSURE REGULATING APPARATUS Application July 13 mass.

Patented 00%."25. 189i}.

p UNITED STATES;

PATENT DF IcEt.

W LLIAM auna; otijunw OR u. lamb o THE WARREN WEBSTER a COMPANY,:-QFNEW JERSEY'. a a

r passs'uRs-sscehs'riNG'FAP TU i v l srncxrrcn'rrou forming" part of Letters Patent n6; 613,030, dated October 25, 189 Application filed July 13,1893. sestirorssassl. ama s Toall whom itmay concern: a

Be-it known that I, WILLIAM G. FREER, of

New York, (Brooklyn,) Kings county, New

1 Ybrk, have invented an Improvement in Pressure-Regulating Apparatus, of which the following isaspecification; 1

' ing drawing.

My invention relates-to pressure regulatin g apparatusyand it consists ofthe improvements which are'set forth in the following specification and are shown in the accompany.-

Heretofore it has been motor controlled by the pressure in the pipe or chamber to which-the steam is supplied. In such apparatus the pressure is controlled whollyiby the operation of the said reducing ivalve.

It is the object of myinvention to further control the pressure in suchpipe or chamber byan additional relief or back-pressure valve independent of the pressure-reducing valve,

= but also controlled by the pressure in said pipe or chamber;

My invention is especially adapted to the" control of the pressure in steam-heating'systems in whichexhaust-steam from the engine supplemented by a supply of live steam from the boiler is usedas the'heating medium. In thus applying my invention the steam-supply pipe is provided with the ordinary pressurereducing valve controlled by the pressure in the pipe itself, and the back-pressure valve on the exhaust is similarly controlled, so that when the pressure in the system falls below thenor'mal the reducing-valve isopened and the baclepressure valve is shut; butwhen the pressure rises above the normal the reducing- J.

a valve is closed andthe back-pressure valve is opened to relieve the excess pressure andrestore the normal.

pressure in the system, and by a proper arrangement or construction of such motors, as by a d ierential counterwelghtlngthe reducing-va.ve motor isoi'perated to close the re ducing-valve before the relief-valve motor is operated to open the relief-val e, and upon a I usual to operate a' pressure-reducing valvebya fluid-pressure fallof'pressurein the systemthe latter motor .is operated to close the relief valve before the pressure-reducing valv'e is opened, thus permitting the-normal pressure to berestored under certain conditionstwithout the necessity of opening the reducing-valve;

' In'the drawing I have shown'a. side eleva-g tion of a pressure regulatingapparatus cIn-I bodying my invention with parts invertical section.- w 1 H t A: is a steam-pipe leading from" the, boiler or other source of supply to a reducing-valve B, through which steam is fed to the pipe 0;

leading to the apparatus to which thesteam is to be supplied e. g., to a steam-heating system. a

D. is a'valve controlling the liow'of motor fluid,such as water 'underpressure, through a pipe E to a motor Hand operated by'a motor F, controlled by the pressure inthe pipe 0,

ing therefrom.

through a connecting pipe or passage c, leadv (G is the discharge orwaste from the a nected with the valve B; a v

When the pressure in the pipeCrises-be yond the desired amount, the motor F, controlled thereby, operates the valveD and per-;

mits themotor fluid to to, the motor'II,

whichinturn closes the valveB and stops I the flow of steam from the pipe A into the pipe C. When .the pressuregfalls, the motor F moves back and operates the valve D to f open to the discharge G and permitthemotor ticularity,'only so much of the construction being here 'shownand described as is neces sary to an understanding ofmy invention.

{I is a pipe-su'ch-,e', g.;;'as theexhaust-pipe of an engine- -containing a back-pressure valve. J, which may beof usual' construction.

H is a motor similar to the mlotor H and communicating with-the ;motor-fiuiid pipe E therefrom by a pipeE', (shown :c'o'nnecting with-the vpipe E at the inlet to the motor H'.)'

As shown, the motor I-I' consists of a cylinder g a counterweighted piston K, oper- J that when operatedby the pressure of the motor fluid it will open the valve to relieve the pressure in the pipe I. The counterweight V ,L' of the motor H is heavier than the counterweight L of the motor H, so that when thevalve D is operated in the mannerdescribed, upon an excess of pressure in the pipe 0 the pressure of the water or motor-fluid will first operatethe motor H-to close the valve B and will then-operate the motor H, openingthe back-pressure valve J and-relievin g the pressure in the pipe I.- T

1 When'the'pressurein the pipe C is reduced pressure valve .J is located, connected with thesupplypipe 0, as is usual in a heating system where exhaust-steam is usedfor heating purposes and is'Sfl PPlemented by a sup- 3o ply of live steam through the valve B; In this applicationof my invention it will be observed that whenever the pressure in the pipe C rises above the normal the supply-valve B for live steam is first closed and the back- I 3' pressure valve J is then opened to relieve the excessive pressure, and that When the pres.-

';sure is reduced the back-pressure valve J is first closed, and if this does not restore the.

desired pressure the valve B is opened to adimxmit live.steam.. In this way the back-pressure valve is controlled bythe pressure in the pipe 0, being openedwhen there is ;an ex- :cess of pressure and the supply valve B is closed, and'closed when the vpressure is re duced and. the valve B is-opened, The excess' Weight of the motor H insures the clos-v ing of the back-pressure valve whenthe valve B is,open.'

If the closing of baclr-pressure valve J through the operation of the motor H issufficient to restore the normalzpressure in the pipe 0, the motor F will operate the valve D .and close it before them'gtpr H has operated to open the reducing-valve livvhich will th us remain closed until the pressure in'the pipe 0 fails, when the valve D will "be opened by the motor F and the pressure on the motor H relieved and the valve'B opened.

The details of construction are not material to the invention and may be varied without departing from it. I I

What I claim as new, and desire to secure by Letters Patent, is as ,follows;

1. In a pressure-regulating apparatus, the

at 'ely connected, as by a connection I), with the connterweighted leverJ of the valve J. The motor 11 is so connected with the valve combination of'a valve for controlling the supply of steam, a fluid pressure motor for opcrating it, a valve for controlling the fi'uidpressure to said motor, a motor for operati g the pressure in the pipe or'chamber supplied by said steam-controlling valve, a back-pressure valve, and a fluid-pressure motor controlled by the pressure in saidpipe or chamber for operating said back-pressure'valve.

2. In pressure-regulating apparatus, the

combination of a valve for controlling the sup-- ply of steam to a pipe or chamber, operated by the pressure therein, of a back-pressure valve adapted to control the pressure in said pipe or chamber, and means for operating said back-pressure valve controlledby the pressure in. said pipe or chamber.

3. In a pressure-regulating apparatus, the combination of a valve for controlling the supply of steam to a pipe or chamber, operated said motor-controlling valve, controlled by 7' by the pressure therein, offa' back-pressure "valve adapted to control the'pressure in said pipe or chamber, and a fluid-pressure motor controlled by thepressu're in said pipe or chamber and operatively connected with said back-pressurevalve.

4:. Ina pressure-regulating apparatus, the

for operating said valve, a back-pressure combination ofa valve for supplying steam '1 v to a pipe or chamber, a fluid-pressure motor valve forcontrolling the pressure in said pipe orchamber,-a-fluid-pressure motor for operating-said back-pressure valve, and means controlled by the pressure in the pipe or chamber for operating said iluid-pressuremot0rs 5. Ina pressure regulating apparatus-the combination of a valve for supplying steam to a pipe or chamber, a fluid-pressure motor for operating said valve, a backpressure valve -for controlling the pressure in said pipe or'chamben-a fluid-pressure motor for operatingsaid back-pressure valve,a valve for controlling the fluid-pressure he said motors,

and a motor controlled by .the pressure in the pipe or chamber for controlling said valve.

6-. In a pressure-regulating apparatus, the

combination of a valve-for supplying steam to a pipe or chamber,acounterweighted fluidpressure motor for operating said-valve, a back-pressure valve for controlling the pressure in said pipe or 'chamber,' a' counterweighted "fluid-pressure motor for operating counterweight than the motor for operating the supply-valve, and means controlled by the pressure inthepi-pe orchamber for operating' said fluid-pressure. motors.

saTd'back-pre'ssure v-aive'havingagreater"' In testimony of which invention I hereunto I set my hand. v v

I WILLIAM GrFREER, I

W'itnesses: j

.DANL'. A. SLATrEgY; JOHN A. SEWELLL' 

